/*[INCLUDE-IF Sidecar18-SE]*/
/*
 * Copyright IBM Corp. and others 2007
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution and
 * is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following
 * Secondary Licenses when the conditions for such availability set
 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
 * Exception [1] and GNU General Public License, version 2 with the
 * OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 */
package com.ibm.dtfj.javacore.parser.j9.section.classloader;

import java.util.regex.Matcher;

import com.ibm.dtfj.javacore.parser.framework.tag.LineRule;
import com.ibm.dtfj.javacore.parser.j9.section.common.CommonPatternMatchers;

public abstract class ClassLoaderLineRule extends LineRule implements IClassLoaderTypes {

	protected void matchLoaderAndAddAttNameAndAddress(Matcher firstAlternative, Matcher secondAlternative, String attribute) {
		consumeUntilFirstMatch(CommonPatternMatchers.whitespace);
		consumeUntilFirstMatch(ClassLoaderPatternMatchers.loader);
		addAttributeNameAndAddress(firstAlternative, secondAlternative, attribute);
	}

	protected void addAttributeNameAndAddress(Matcher firstAlternative, Matcher secondAlternative, String attribute) {
		String value = null;
		if ((value = matchAndConsumeValue(firstAlternative)) == null) {
			value = matchAndConsumeValue(secondAlternative);
		}
		if (value != null) {
			addToken(attribute, value);
		}
	}

}
